Dumping-car.



A. C. MURPHY.

DUMPING CAR.

APPLICATION FILED ocr. 4. 1915.

Patented July 10, 1917.

2 SHEETS-SHEET] INVENTOR WITNESSES C. MURPHY. DUMPING CAR.

APPLICATION FILED OCT- 4, l9|5.

Patented July 10, 1917.

2 SHEETS-SHEET 2.

INVENTOR ATTORNEY am My fi PUMPING-C it:

Specification of Letters Patent.

Patented July Ttl, llbl't'.

I Application filed. October t, 1915. Serial No. 53,913.

To all whom it may-camera:

Be it known that I, ALBERT G. MURPHY, a citizen of the United States, and resident of New York, county of New York and State of New York, have invented an Improve? ment in Dumping-Cars, of which the following is a specification.

The object of my invention is to provide a suitable construction of dumping car having hinged side doors and operating mechanism therefor, whereby the tilting operation of the body will automatically cause. the door on the depending side to open into dis-.

.charging position, and during the righting of the body into its normal horizontal position, will also automatically close the door. My object is also to provide in a dumping car, means for automatically opening and closing a door or doors of a tilting body,

associated with locking means which normally lock the door or doors when the body is in the normal horizontal position and 'which automatically release the doors d ur-, ing the preliminary portion of the tilting period of the body so as not to interfere ,with the positive opening and closing of the doors,'and yet which will assist in holding the doors in locked position when the body is in its normal horizontal the travel of the car.

With the above and other objects in View, the nature of which will be more fully understood from the description hereinafter, the invention consists in'the novel construction of dumping cars as hereinafter more fully described and defined in the claims.

Referring to the drawings Figure 1 is a side elevation of one end of a dumping car embodying my invention, with a portion'brokenaway and with the position of the truck diagrammatically illustrated; Fig. 2 is a cross sectional elevation of the dumping car; and Fig. 3 is a plan view of the locking means at one corner of the body.

2 is the longitudinal girder frame which is directly supported upon the trucks at each end, and said girder frame is provided at intervals in its length with transverse rocker beds 3 upon which the body rocks, and is alsolprovided at its ends with platform extensions 27 upon which the cabs 28 are built and which contain the operating mechanism 29 for tilting the body 4. 'The body 4 is substantially rectangular in shape and its bottom is strengthened by a longitudinal T- positions during.

beam 6 and transversely arranged channel beams 5. Beneath these beams 5'and 6 are arranged the rockers 7. which coact with the rocker beds 3 and by which the body 4 may be rocked into tilted position, as indicated in dotted lines in Fig. 2. The construction is such that the'body may be rocked to either side of the longitudinal girder so as to dump to whichever side of the track may be desired. There may be any number of rocker beds and rockers throughout the length of the body asdesired, and if preferred, the pivoting of the body 4 may be arranged in any other suitable manner, though I prefer the construction illustrated. 'Adjacent to thelateral outer edges of the floor of the body and abutting the outer endsof the beams. 5 are Z-girders 30 which also strengthen the body longitudinally and act as the direct supports for the hinged doors 8. The hinged side doors 8 are of sheet metal and are reinforced by vertical frames 9 hinged at 10 to the aforesaid longitudinal Z-girders 30, and also by longitudinal girder construction at the top preferably composed of two angle'irons 12 riveted together and to the tops of the vertical frames'9 and also to the sheet'metal of the'door 8, so that these doors are made very strong and rigid in construction whereby they are capable of withstanding the necessary outward pressure when the car is loaded and being transported, and also to withstand the load when the door is lowered and acting as a chute for guiding the load from the tilted body. The particular bracing of the door may be varied in many ways without departing from the spirit of the invention. A plurality of the vertical frames 9 are extended at the lower parts below the hinge points 10, as indicated at 11. these formingshort lever arms by which the doors are opened and closed. .Hinged to these arms 11 at their lowermost parts are the telescopic struts 20,

the other ends of which are hinged at 21 to the thrust plates 22 riveted to the main girder 2. From Fig. 2 it will be observed that when the body 4 is in itsnormal horizonta-l position and the telescopic struts 20 .are fully closed or collapsed, the distance between the hinge points,21 of the thrust plates and the arms 11 of' the doors issuch that the doors are swung tightly into their closed positions and no aniount of pressure by the load outwardly against the doors can open the doors without actually bending the scopic link 16 which is hinged at one end.

. with the normal lowering of the door.

this manner, the lock or latch does not inter- I arms 11yor breaking the struts 20. In thismanner the doors are very positively kept close to the upper lateral corners, and the .upper 'longitudinal edge 31- of the angle-' irons 12 is notched to permit these locks or, latches 13 fitting snugly down to extend over the laterallyprojecting flanges of the girder parts 12 of the doors and thereby secure greater rigidity than if the hooks were simply hooked over the upper edge of the doors. These hooks or latches may be operated by an arm 15 connected by a teleto the arm 15 and at the other end to the main girder frame 2 at 19.- When the body 4 is in its horizontal position, as shown in Fig. 2, the telescopic link 16 is fully collapsed, and if the body is then tilted as indicated in dotted lines, the beginning of such tilting operation will cause the lock or latch 13 to remain horizontal while the body and door thereof tilt downward so that-there is a relativemovement between the lock or latch and the door which releases the door at the beginning of the tilting operation so that the lock does not interfere In fere with the releasing of the door and the positive opening thereof relative to the body during the tilting operation.

The proportions in the leverages and the positions of the pivots 21 with respect to the axis of oscillation of" the bod are such that when the body is tilted to" its fully rocked position, as indicated in dotted lines m F g. 2, the'door 8 is brought into substantial parallellsm to the floor of the body so that it. acts as an inclined chute over i which the contents of the body is required to pass and be guided away from the track. Durmg the tilting operation, it will be manifes't that when the latches release the doors the gravity action of the door tends to open it, -and this is. assisted by the pressure of the side Z-frame 30 of the-body and limits the load, the opening tendency being at all time'sresiSted-by the strut bars 20, so that the door opens gradually, and when fully open, the arm 11 rests against the bottom of the maximum opening or downward swinging of the door so that its ultimate position is an inclined one and'pra'ctically parallel to the bottom of'the floor of the body. It will also be noted by reference to the dotted linesin Fig. 2 that the direct thrust of the post 20 from the hinge 21 to the connection of the post with the arm 11 of the door, is below the pivotal point 10 so that during the rising of the body back into its normal position, the hinge axis 10 of the door constantly approaches the hinge 21, and when the horizontal position of the body is reached this operation will'have caused the door to close tightly upon the side of the body.

' While the operation of the strut bar 20 on the lowering side of the body acts to positively open the door andthen to close the. door during the complete tilting cycle on that side of the car, the corresponding strut bar 20 on the other side of the car does not perform any function and the telescopic construction thereof permits the extension of the bar, as will be readily understood. In this way the door on the rising side of the body is not affected either as to opening or closing. This same requirement holds good with respect to the locks and latches on the rising side, for in this case also the telescopic link 16 is extended and therefore does not affect the lock or latch on the rising side of the body. It will be" seen, therefore, that the operation of the side doors to open and closeis automatic only upon the lowering side during the tilting operation. It will also be seen that when the car body is in its normal horizontal position both of the doors are positively locked in closed position, notonly by the operating means for the doors themselves, but also by the looks or latches 13. I

In adapting my improvements to a car structure of the general character stated, I

have found it most advisable that the hinge points 21 shall be positioned above the rocker or pivotal. point of the body itself, so that the distance between the hinge points 10 and 21 shall increase during the tilting operation of the body, but it is manifest" that this is required only when the door is hinged in the manner which brings the ex tension 11 for connection with the strut bar 20 belowthe pivotal point 10 and therefore while I prefer the particular illustration erally from the axis of oscillation of the body, and this construction I employ to.

.quickly reduce the distance, between the pivotal point 19 and the arm 15 of the lock orlatch, soas to make the latter open positively at the initial tilting operation of the body, and thereby not interfere with the normal opening of the doors, and while I have in opening the door. The reverse of these found that this is'an excellent arrangement in commercial practice, I do not wish to be limited to these precise details, as any suitable means may be employed'to operate the latches either automatically or otherwise.

In the' particular arrangements illustrated,

it will be observed that in the lowering of the side of the car body the link 16 acts as a positive strut for the latch to insure its operation, while in the case of the strut 20 it operates as a passive strut to limit the action of gravity of the door and the load actions takes place in the struts 20 and 16 when the body is being tilted to its-horizontal or normal position, for in such action the door is positively and forcibly closed whereas the latch is passively brought to its locking position by gravity, action and the doormay snap under the latch in the finallocking operation.

The particular means for rocking or tilting the body is not material to my present invention, but I have shown by way of illustration the general construction which I have heretofore employed for imparting a rocking or tilting motion, and will briefly refer to said mechanism. At each side of the longitudinal main girder 2 I provide at in tervals brackets 2 in which are'journaled shafts 23 carrying p-inions 24; Engaging the said pinions-are rack bars 25 the upper ends of .whicharehinged to the girders 5 of the body & to one side of the rocker bed 7. The rack bars 25 are held in engagement with the pinions 24 by the guide rollers 26. These constructions are similarly arranged at eaoh side of the rocker beds and preferably the shafts 23 respectively extend to the opposite ends of the car and may be respectively operated by operative mechanism 29 located in the cabs at the opposite ends. In Fig. 1,

this mechanism is shown as arranged to actuate the longitudinal shaft 23 at the far side of the car, while the 'shaft 23 at the near side is supposed to extend to and be operated from the opposite end ofthe car.

In this mannerthe car body may be" operated from either end of the car. The ticular operative mechanism 29 shown 1s a hand operated device for multiplying man- 'ual power to take care of the heavy load to be manipulated. While I have found this means for tilting the body satisfactory in practice, I do not restrict myself thereto.

Having now described my invention, what I claim as new and desire to secure by Letters Patent, is

of the hinged door beyond its hinged point and'at the other end with themain frame by ajoint having a fixed position thereon and arranged for swinging the doorinto a closed position upon the body when the latter is moved into a horizontal position and causing' the door to open when carried down with the body into the tilted position.

2. In a dumping car, the combination of the main frame, a car body supported thereon with provision for being rocked to dump from either side, means to rock the car body,

a separate door at each side of the body and respectively hinged thereto to permit discharge of the contents, two independent/mechanical means respectively connecting the hinged doors with the main frame and ar-v ranged for swinging the doors into a closed position upon the body when'the latter is moved into a horizontal position and causing the doors to open when carried down with the body into the. tilted position, and means forlimiting the swinging of the door upon the body when in its rocked position whereby the lowered door assumes an oblique position to the ground and a substantially parallel relation to the inclined bottom of the body.

3. In a dumping car, the combination of the main frame, a car body supported thereon with provision for being rocked, means to rock the car body, a door at the side of the body andhingedthereto to permit *dischargeof, thecontents, mechanical means connecting the hinged door with the main frame arranged for swinging the'door into a closedposition upon the body when the latter is moved into a horizontal position down with the body intothe tilted position, locking meansv for locking the doorin its Jclosed position, and automatic means for operating the locking means-to release the door at the initial tilting operation of the body. vJ.

' 4. In a dumping car,.the combination of -,the main frame, a car body supported thereon with provision for belng "rocked, means to rock the car body, a door at each,

side of the body andrespectively hinged thereto adjacent to the lower side portions of the body and havinga downwardly extending operatingarm, said doors to permit discharge of thecontents, and independent mechanical means connecting the hinged doors with the mainframe arranged for swinging the doors into a closed 'position upon the body when the latter is moved into a horizontal position andcans door to open when either is'carried down with the body into the tilted'p'osition and consisting of a strut bar hinged atfone end tr the downwardly extending arm of the door andat the other end to the mainframe whereby said: bar actsas a strut in hori-' and causing the door to open when carried the let

lower side portions thereof andarranged to a zontal and all lowering positionsof the door to positively limit its position on the body. v

5. Ina dumping car, the combination of the longitudinal main 'frame, a tilting body supported thereon with provisionfor being rocked to dump to either side, side doors for the body respectively hinged to the open outwardly and downwardly and said doors having operating arms extended be.

yond the hinges, strut bars between theextended arms of the doors and the longitudinal main frame, said bars extensible in one 6. In a dumping car, the combination of the longitudinal main frame, a tilting body supported thereon with provision for being rocked to dump to either side, side doors forfthe body respectively hinged to the lower side portions thereof and arran ed to open outwardly and downwardly an said doors having operating arms extended beyond the hinges, strut bars between the extended arms of the doors and the .vlongitudinal main frame,' said bars extensible in one direction and operating continuously as strut bars for the doors when being lowered in the tilting operation but extenlowered, and suitable means foru'ocking sible when the doors are being raised on the rising side of the body, locks for 'normally locking'the doors in their closed po- 'sitions, automatic means for operating said locks to release the door on the dumping side of the car when the body is being the body. v

7'. In a dumping car, the combination of the longitudinal main frame, .a car body pivoted thereon, a side door hinged to the bar hinged atone end to'the door to hold,

it normally closed'and hinged at the other end to the longitudinal main frame above the pivotal support thereon for the body and operating during the tilting operation of the: body toincrease. the ='distance between the hinge of the door and the pivotal point of support of the body in the act of dumping and vice ver'sa when bringing the body to a horizontal position from dumping position, whereby the door is permitted to'open to discharge the load when the body is tilted and automatically closed when the body isrighted to the normal position. 8. In a dumping car, the combination of the longitudinal main frame, a car body pivoted thereon, a side door hinged to the body adjacent to its lower end,-a nd a strut bar hinged-at one end to the door to hold it normally closed and hinged at the other end to the longitudinal main frame above the pivotal support thereon for the body and operating during the tilting operation of the body to increase the distance between the hinge of theldoor and the pivotal point of support' of the body in the act of dumping and versa when bringing the body to a horizontal position from dumping position, whereby the door is permitted to open. to discharge the load when the body is tilted and automatically closed when the body is righted to the normal position, said strut being extensible in one direction whereby the raising of the door and the part of carrying it above the normal horizontal plane will not cause the door to lie-operated.

In testimony of which invention, I hereunto set m'y'hand. y

ALBERT C. MURPHY.

Witnesses;

SAMUEL'G. REA, R am ErPQWERS. 

